“Concrete Epoxy”! Epoxy Mortar liquids is a 2 part special resin that you mix with locally-purchased, bagged, ‘playground type’ sand, or size “00” or “0” sand, (this type of sand is smooth and very clean). You mix the A & B together, and then add the sand to a ‘pasty’ consistency and use for filling expansion joins, saw cuts, cracks, divots, spalls, etc. Each gallon of mixed resin will hold about 50 lbs of sand. Stronger than concrete and bonds perfectly. Used to make your floor ultra-smooth prior to applying our epoxies. Comes in 1 gal size and 3 gal size. Coverage is dependent on crack sizes and application and sand mix content.